Abstract: Apparatus for locking together modules of a computer system includes first and second members that are secured, by screws, proximate adjacent edges of adjacent modules. Tabs on the members and holes through the tabs align so that a padlock may be utilized to lock the modules together. A slotted plate is positioned on the tabs and secured in place by the padlock to cover the securing screws so that they cannot be removed.

Abstract: The locking apparatus is used to secure one or more memory cartridges in a housing in a computer system module. An L-shaped member is fastened to the module by a screw in an existing threaded screw hole in the module. A second member is inserted into the module and locked to the L-shaped member by a padlock. The second member includes a first plate that fits into a clearance space between the cartridges and the housing to prevent the cartridges from being unplugged from connectors mounted in the housing. The second member includes a second plate that prevents the end of the outermost cartridge from being pulled out of the housing to clear the first plate and includes a third plate which in use covers the mounting screw of the L-shaped member so that the screw cannot be removed.

Abstract: The disclosure is of electronic apparatus having a keyslot in its housing, by which it is coupled to a mounting screw. To protect the electronic circuitry inside the housing, the keyslot is covered internally by a layer of insulating paper and a thin metal sheet which overlies the paper and which is cemented to the surface of the housing adjacent to the keyslot. With this arrangement, the keyslot is accessible externally of the equipment for insertion of a screw; however, the inner circuit elements are completely and permanently sealed off from the outside world.

Abstract: The disclosure is of a connector comprising an insulating body which carries a cable having exposed conductors to be pressed into contact with electrode contacts on a substrate. One end of the cable is secured to a printed circuit board or the like. The cable extends over an insert of a synthetic resinous material in the body, which serves to press its conductors into intimate engagement with the conductors on the substrate, and a spring-like clamp, which is coupled to the body, snaps into place and clamps the connector to the substrate, with the cable properly engaging the substrate.